Gear-casing for electric railway-motors.



PATENTED AUG. 29, 1905.

H. R. EDGECOMB. GEAR CASINGJUR ELECTRIC RAILWAY MOTORS.

APPLICATION I'ILED AUG.17,1904.

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No. 798,173. PATENTED AUG. 29, 1905 5,3. EDGEGOMB.

GEAR CASING FOR ELEGTRIG RAILWAY MGTORS.

APPLICATION PILED AUG. 17,1904.

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GEAR CASING FOR ELECTRIC RAILWAY MOTORS.

APPLICATION FILED AUG,17,1904.

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WH'NESSES:

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UNITED STATES PATENT OFFICE.

HENRY R. EDGEGOMB, OF EDGEWOOD PARK, PENNSYLVANIA, ASSIGNOR TO WESTINGHOUSE ELECTRIC & MANUFACTURING COMPANY, COR- PORATION OF PENNSYLVANIA.

GEAR-CASING FOR ELECTRIC RAILWAY-MOTORS.

Specification of Letters Patent.

Patented Aug. 29, 1905.

Application filed August 17, 1904. Serial No. 221,089.

To all whom it may concern:

Be it known that I, HENRY R. EDGECOMB, a citizen of the United States, and a resident of Edgewood Park, in the county of Allegheny and State of Pennsylvania, have invented a new and useful lm provement in Gear-Casings for Electric Railway-Motors, of which the following is a specification.

My invention relates to electric railway-motors, and particularly to the casings which are usually employed in connection therewith for the purpose of inclosing the gearing which transmits the motion of the armature-shafts to the drivingaxles.

My invention has for its object to provide a casing of the character described the two halves of which are removable from the gears independently of each other.

It has been proposed to so construct electric railway-motors that either half of the fieldmagnet frame may be opened or removed without disturbing the other half, this feature being of considerable advantage in the operation of electric railways which are equipped with both single and double truck cars, since the same motors may then be employed on both types of cars. In connection with such motors it is desirable, if not necessary, to employ casings for the gears between the armature-shafts and the driving-axles that are divided into two parts which are removable independently of each other.

My invention provides a gearing-case which meets these conditions and is illustrated in the accompanying drawings, in which Figure l is a View in elevation of one end of an electric railway-motor constructed in accordance therewith, and Fig. 2 is a view in elevation of the opposite end of the motor opposite that shown in Fig. 1. Fig. 3 is'a plan view of a portion of the gear-casing and adjacent parts.

Substantially in accordance with the usual type of construction of electric railway-motors the field-magnet of the motor 1 is divided into two parts 2 and 3 on aplane which passes through the centers of armature-shaft 4: and

driving-axle 5, the two halves being hinged together at the side opposite to the drivingaxle 5 by means of lugs 6 and 7 and a rod 8. Bolts 9 serve to secure the two halves of the field-magnet frame together.

Cast integral with the respective halves of the field-magnet frame are supporting-lugs l0 and 11, the former of which may be bolted to a suspension-bar 12 by means of bolts 13, or the latter of which may be bolted to a similar bar by like means, (not shown,) according as the motor is used for driving a single-truck car or a double-truck car.

Suitable bearings 14 for the armature-shaft are supported and inclosed by a bearing-housing 15, which may be of almost any of the well-known types of construction. The bearing-housing 15 is secured in position between recesses in the upper and lower halves of the field-magnet frame and by tap-bolts 16 and 17,

that pass through lugs 18 and 19, with which 25, that incloses the usual gear-wheel and pinion with which the driving-axle and the armature -shaft are respectively provided. The upper half 26 of the gear-casing 25 is supported in position independently of the lower half 27, one end being provided with a lug 28, which rests upon the end of the bracket 24, and the opposite end being secured, by means of a bolt 29, to the upper half of the field-magnet frame.

One end of the lower half 27 of the gearcasing 25 is secured to the lower side of the bracket 24: by means of a bolt 30, that passes through the bracket 24, and a lug 31, with Which the lower half 27 of the casing is provided, and that also secures the upper half 26 of the casing to the said bracket. The other end of the lower half 27 of the gear-casing is secured to the lower half of the field-magnet frame by means of a bolt 32, and the two halves of the gear-casing are secured together by-means of a bolt 33. The upper side of the upper half 26 of the gear-casing is provided with a covered opening or hand-hole 34-. for the purpose of permitting lubrication and .inspection of the inclosed gears.

If the motor 1 is supported by means of the lugs and the suspension-bar 12 and it is desired to expose the interior of the motor without disturbing the gear-casing, it isnecessary to remove the bolts 9, 17, 23, and 32. The armature-remains in the upper half of the field-magnet frame, being supported in that position by means of tap-bolts 16, and since the positions of the gear and pinion with reference to each other are not disturbed it is unnecessary to remove the lower half of the gear-casing. If, however, it is necessary when the motor is supported as just described to expose the interior of the upper half of the field-magnet frame, the lower half of the gear-casing must be removed, since the positions of the gear and pinion-are changed with reference to each other, and the armature must be lowered with the lower half of the field-magnet frame. In order to perform this operation, the bolts 9, 16, 23, 30, 32, and 33 must be removed, the upper halves of the field-magnet frame and the gear-casing remaining undisturbed.

If the motor 1 is supported by means of the lugs 11 and their suspension-bar and it is desired to expose the interior of the motor, the upper half of the field-magnet frame must be opened, and this may be done without disturbing the gear-casing by removing the bolts 9, 16, 22, and 29, the armature remaining in the lower half of the field-magnet frame. If, however, it is desired to make repairs in the lower half of the field-magnet frame, the armature may be retained in its position in the upper half of the field-magnet frame by means of the bolt 16, and it is then necessary to remove bolts 9, 17, 22, 29, 30, and 33, which permits of the removal of the upper half 26 of the gear-casing. Evidently it is possible to remove either half of the gear-casing without disturbing the other half or other parts of the motor.

The details of construction may be varied considerably within limits without departing from the scope of the invention, and I do not wish my invention limited except by by such restrictions as are imposed by the prior art.

I claim as my invention 1. The combination with an electric motor having a field-magnet frame comprising two parts hinged together for independent movement, of a gear-case formed in two parts which may be removed independently of each other.

2. The combination with an electric motor having a field-magnet frame comprising two parts hinged together at one side and having meansfor clamping them together around the armature-shaft and the driving-axle, of a gear-case formed in two parts and means for so clamping said parts together and to the parts of the field-magnet frame that they may be independently removed.

3. The combination with an electric motor having a field-magnet frame formed in two parts which are hinged together at one side and which may be opened independently of each other and axle-caps for the driving-axle which are secured to both parts of the fieldmagnet frame and one of which is provided with a bracket, of a gear-case formed in two parts which are independently secured to the said bracket and which are respectively secured to the upper and the lower parts of the field-magnet frame.

' 4. The combination with an electric motor having a field-magnet frame formed in two parts which are hinged together at one side and which may be opened independently of each other and axle-caps for the driving-axle which are secured to both parts of the fieldmagnet frame and one of which is provided with a bracket, of a gear-case formed in two parts which are removable independently of each other.

5. The combination with an electric motor having a field-magnet frame formed in two parts which are hinged together at one side and which may be opened independently of each other and axle-caps for the driving-axle which are secured to both parts of the fieldmagnet frame and one of which is provided with a bracket, of a gear-case formed in two parts which are supported at one end by the said bracket and are respectively secured, at

having a field-magnet frame formed in twoparts which are hinged together at one side and which may be opened independently of each other and axle-caps for the driving-axle which are secured to both parts of the fieldmagnet frame and one of which is provided with a bracket, of a gear-case formed intwo parts which are respectively secured at one end to the upper and lower sides of' said bracket and at the other end to the upper and lower parts of the field-magnet frame.

7. The combination with an electric motor having a field-magnet frame formed in two parts which are movable independently of each other, of a gear-case formed in two parts which are removable independently of each. other.

8. The combination with a driving-axle and an electric motor having a field-magnet frame divided, in a plane through the axes of the armature-shaft and the driving-axle, into two:

parts which are hinged together-at one side and provided with lugs by means of which the armature may be supported from either part, of axle-caps which are secured to both parts of the field-magnet frame, one'of which is prothe said bracket and to the lower half of the field-magnet frame and the lower side of the said bracket.

9. The combination with an electric motor having a field-magnet frame comprising two parts that are hinge-supported at one side, of a gear-case formed in two parts which may be removed independently of each other.

10. The combination with an electric motor having a field-magnet frame comprising two separable parts having means for clamping them together around the armature-shaft and the driving-axle, of a gear-case formed in two parts and means for so clamping said parts together and to the parts of the field-magnet frame that they may be independently removed.

11. The combination with an electric motor having a field-magnet frame formed in two parts which may be opened independently of each other and axle-caps for the driving-axle which are secured to both parts of the fieldmagnet frame and one of which is provided with a bracket, of a gear-case formed in two parts which are independently secured to the said bracket and which are respectively secured to the upper and the lower parts of the field-magnet frame.

12. Thecombination with an electric motor having a field-magnet frame formed in two parts which may be opened independently of each other and axle-caps for the driving-axle which are secured to both parts of the fieldmagnet frame and one of which is provided with a bracket, of a gear-case formed in two separable parts which are secured to said bracket.

13. The combination with an electric motor having a field-magnet frame formed in two parts which may be opened independently of each other and axle-caps for the driving-axle which are secured to both parts of the fieldmagnet frame and one of which is provided with a bracket, of a gear-case formed in two parts which are supported at one end by the said bracket and are respectively secured, at the other end, to the upper and lower parts of the field-magnet frame.

14. The combination with an electric motor having a field-magnet frame formed in two parts which are hinge-supported at one side and which may be opened independently of each other and axle-caps for the driving-axle which are secured to both parts of the fieldmagnet frame and one of which is provided with a bracket, of a gear-case formed in two parts which are respectively secured at one end to the upper and lower sides of said bracket and at the other end to the upper and lower parts of the field-magnet frame.

15. The combination with an electric motor having a field-magnet frame in two parts which are hinge-connected at one side and are movable on said hinges independently of each other, of a gear-case formed in two parts which are removable independently of each other.

16. The combination with a driving-axle and an electric motor having a field-magnet frame divided, in a plane through the axes of the armature-shaft and the driving-axle, into two parts that are provided with lugs by means of which the armature may be supported from either part, of axle-caps which are secured to both parts of the field-magnet frame, one of which is provided with a bracket, a gear-case formed in two parts which are secured independently of each other respectively to the upper half of thescribed my name this 11th day of August, 1904:.

HENRY R. EDGECOMB. Witnesses:

WV. J. REIoI-I,

- BIRNEY HINEs. 

